Bajaj Auto — I am not got proper bill for the Bike I've purchased with ready cash

10 days before I bought Pulsar N160 Dual ABS. They have take more amount comparing to other dealers surrounding me. As well as they did not provide prober purchase bill including with RTO, Insurance/other charges any. They have only provide invoice bill with Ex-showroom price for that too I've asked them so many times. I need help and resolution for this